/*
 * Copyright 2010-2012 Susanta Tewari. <freecode4susant@users.sourceforge.net>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package bd.org.apache.commons.math.exception.util;

import java.util.ArrayList;
import java.util.List;

/**
 * Utility class for transforming the list of arguments passed to
 * constructors of exceptions.
 *
 * @version $Id$
 */
public class ArgUtils {

    /**
     * Class contains only static methods.
     */
    private ArgUtils() {}

    /**
     * Transform a multidimensional array into a one-dimensional list.
     *
     * @param array Array (possibly multidimensional).
     * @return a list of all the {@code Object} instances contained in
     *         {@code array}.
     */
    public static Object[] flatten(Object[] array) {

        final List<Object> list = new ArrayList<Object>();

        if (array != null) {

            for (Object o : array) {

                if (o instanceof Object[]) {

                    for (Object oR : flatten((Object[]) o)) {

                        list.add(oR);
                    }

                } else {
                    list.add(o);
                }
            }
        }

        return list.toArray();
    }
}
